NW.js - PouchDB - Unable to use PouchDB via require() in node webkit

Question

I am new to pouchdb and nw.js and may be this question is a little bit too simple, (sorry for my ignorance).

I am trying to to use pouchdb in a nw.js project via require() but with no luck.

According to the documentation for the pouchdb setup , under Node.js section, I dit it exactly as it says with no success.

After that I installed leveldown component into the project, and I have followed the following instructions under https://github.com/nolanlawson/pouchdb-nw github project.

So, at this point, I have already done the following:

nw-gyp configure --target=0.12.3 / in the node_modules/leveldown directory

nw-gyp build

Then, according to pouchdb.com/guides/databases.html I have:

var PouchDB = require('pouchdb');
var db = new PouchDB('kittens');

but again with no luck. In addition, by running the following:

db.info().then(function (info) {console.log(info); });

getting no response.

Note: If just include this <script src="../node_modules/pouchdb/dist/pouchdb.min.js"></script> in the index.html file, everything works like a charm.

nw.js version: 0.12.3 / pouchdb version: 5.2.1

What am I missing?

Answer 1

Finally I found a working solution to my problem.

The work-around is as follows:

1) I updated pouchDB to 5.3.0

npm update pouchdb --save

2) Then navigate to node_modules/leveldown

cd node_modules/leveldown

3) configure gyp with nw.js target version

sudo nw-gyp configure --target=0.12.3

4) Build again the nw gyp

nw-gyp build

5) And then in my javascript module file

 var PouchDB = require('pouchdb');
    var arincPouchDB = new PouchDB('./db/arincAirports'); // new pouch db for node without adapter // means you get leveldb adapter in this case.
    var jsonData = require("../datasrc/output/data.json");
    arincPouchDB.bulkDocs(jsonData);

    arincPouchDB.info().then(function (info) {
        console.log(info);
    });

6) And the console says...

Objectadapter: "leveldb" 
auto_compaction: false
backend_adapter:"LevelDOWN"
db_name: "./db/arincAirports"doc_count: 12
update_seq: 12
__proto__: Object...

Note: If you try to use pouchDB from a script tag in your html file, and at the same time you have to use it in a javascript function, that will be exported via module exports e.g

exports.pouchDBFunction = new pouchDBFunction();

and to use this exported function in another javascript file, like this

var json2PouchDB = require("./js/pouchDBFunction.js");
 json2PouchDB.pouchDBFunction;

will not work and you will get the error pouchdb is not defined. That's why you need to have pouchDB via require() function.

Hope this workaround helps...